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https://issues.apache.org/jira/browse/KUDU-1534?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15438244#comment-15438244
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Adar Dembo commented on KUDU-1534:
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Thanks for doing all of that testing. Unfortunately, I don't think it covers
the scenarios at work here.
Let's enumerate the changes:
* TSRegistrationPB -> ServerRegistrationPB in TSHeartbeatRequestPB. To test
this, you need to run a master/tserver combination of mixed versions. For
example, a cluster where the master is built from trunk and the tserver is
running on 0.10.0 bits.
* TSRegistrationPB -> ServerRegistrationPB in ListTabletServersResponsePB. To
test this, you need to run a master/client combination of mixed versions.
As far as I can tell, your testing didn't mix versions. Moreover, the client
you did use (ts-cli) doesn't issue a ListTabletServers request.
How about this test plan:
# Start a master and tserver using bits from 0.10.0. Create a non-replicated
table. Write some data into it. Stop the master but keep the tserver running.
# Restart the master using bits from trunk.
# Verify that the master is receiving the tserver's heartbeats. You can use the
master's web UI for this, or you can look at the tserver/master logs for
heartbeating errors.
# Run kudu-ksck from 0.10.0. One of the things it'll do is issue a
ListTabletServers call to the master.
> expose software version in ListMaster RPC response
> --------------------------------------------------
>
> Key: KUDU-1534
> URL: https://issues.apache.org/jira/browse/KUDU-1534
> Project: Kudu
> Issue Type: Improvement
> Reporter: Dan Burkert
> Assignee: Dinesh Bhat
> Priority: Minor
> Labels: newbie
> Attachments: cluster-downgrade.log, cluster-upgrade.log
>
>
> KUDU-1490 exposed the software version of tablet servers in the
> GetTabletServers RPC response, but an equivalent doesn't exist for
> ListMasters response. This will become more important as multi-master setups
> get more common.
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